# Lösung: Hashes



```ruby
worte = %w{ Bier Schnaps Bier Vodka Rum Baileys Rum Bier Vodka Bier Hugo }

def de_dupe(input)
  hash = {}
  input.each { |e| hash[e] = true }
  hash.keys.sort
end

puts de_dupe(worte)
```